Remove chromeos::CryptohomeLibrary::IsMounted and convert

chromeos/dbus/mock_cryptohome_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromeos/dbus/mock_cryptohome_client.h"
 
+#include "base/bind.h"
+#include "base/message_loop.h"
+
+using ::testing::Invoke;
+using ::testing::_;
+
 namespace chromeos {
 
-MockCryptohomeClient::MockCryptohomeClient() {}
+namespace {
+
+// Runs callback with true.
+void RunCallbackWithTrue(const CryptohomeClient::BoolMethodCallback& callback) {
+  MessageLoop::current()->PostTask(
+      FROM_HERE, base::Bind(callback, DBUS_METHOD_CALL_SUCCESS, true));
+}
+
+}  // namespace
+
+MockCryptohomeClient::MockCryptohomeClient() {
+  ON_CALL(*this, IsMounted(_))
+      .WillByDefault(Invoke(&RunCallbackWithTrue));
+}
 
 MockCryptohomeClient::~MockCryptohomeClient() {}
 
 }  // namespace chromeos